She raises her eyebrows at him. "Dude, when I say monsters, I don't mean 'people I disagree with,' I mean 'actual literal monsters that tried to kill me the first five minutes I was in Thedas.' Like, I don't believe in demons at home any more than I believe in magic, but I don't really have a vocabulary word for 'malevolent force trying to kill me that can't be communicated or reasoned with.' You want to call them something else, do it. But like ... fuck the Venatori, but they aren't monsters, they're zealots. They scare me too, but I wasn't being glib."

As for the question, though "...really long story. But the short version is a chronic genetic disorder."